Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKinetic Theory of Gases and Gas LawsMedium2 minQB

PhysicsMediummultiple choice

Two tanks of equal volumes contain equal masses of hydrogen and helium at the same temperature. Then:

Answer:

B, C, D

Solution:

For equal masses $n_{H} = \frac{m}{2}$ and

$n_{He} = \frac{m}{4}$ , so hydrogen has twice the moles and twice the

pressure (B). Translational energy is $\frac{3}{2} n RT$ , so it is double

(C). Total energy is $\frac{5}{2} n RT$ for hydrogen and $\frac{3}{2} n RT$

for helium, a ratio of $2 \times \frac{5}{3} = 3.3$ (D). B, C and D.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Kinetic Theory of Gases and Gas Laws

⏱ 2mℹ️ Source: QB

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